Draft-equalizer.



PATENT-ED A-PR.12, 1904,

w. s. EMERT.

DRAFT EQUALIZER. PLIOA'IION FILED FEB 6 1 PATENTBD APR. 12, 19() 4.

W. S- EMERT. DRAFT EQUALIZBR. urmouxon mm) rm. 6. 1004.

H0 IODEL.

mam] /V1 2 Patented April 12, 1904.

UNITED STATES PATENT O FICE.

WILLIAM S. EMERT, OF PEORIA, ILLINOIS.

DRAFT-EQUALIZER.

SPECIFICATION forming part of Letters Patent I\To. 757,288, dated April12, 1904.

Application filed February 6, 1904. Serial No. 192,441. (No model.)

To all whom, it may concern:

Be it known that I, WILLIAM S. EMERT,a citizen of the United States,residing at Peoria, in

duce side draft on the plow, harvester, vehicle,

or other machine or implement being drawn.

- by a team of two or more horses will be avoided, the device being soconstructed that the draft of one horse or team of horses reacts uponanother. To this end I construct the equalizer of a pair of difierentiallevers, and I so connect them that an excessive draft or strain upon oneof them will be transmitted to and react upon the other.

The invention consists in the features of novelty that are hereinafterdescribed with reference to the accompanying drawings, which are made apart hereof, and in which Figure 1 is a plan view of a draft-equalizerfor a four-horse team embodying the invention. Fig. 2 is a plan viewthereof with the double and swingle trees omitted. Fig; 3 is a rearelevation of portions thereof. Fig. 4 is a rear elevation of thedifferential levers.

As shown more clearly in Fig. 4, the differential levers are scarfed toprovide overlapping portions a and b. The opposing shoulders resultingfrom this scarfing are rounded off in order to permit movement of thelevers relatively to each other about centers at which bolts A and Bpass through the levers Aand B, respectively, and also through theperforated ends of a pair of plates or links 0, which overlap thescarfed ends of the levers and constitute the means for holding themtogether in proper endwise relation to each other. As will be seen moreclearly upon reference to Fig. 2, the levers are adapted to move aboutthe centers A and B relatively to each other. In order to accomplish theobjects of the in- Vention, it is necessary to provide means whereby anymovement of either of the levers about its center will cause acorresponding movement of the other lever about its center. Forinstance, upon reference to the dotted lines in Fig. 2 it will be seenthat the horse or team hitched to the lever A has produced a strongerdraft than the horse or team hitched to the lever B, but because of theconnection hereinbefore and hereinafter described the draft of eachhorse or team is made to react upon the other. To this end a frame oryoke D is secured to the plates C, so that it projects forward of theforward side of the levers. In this yoke is journaled a pulley E, andaround this pulley passes a rope, chain, or cable F, the ends of whichare attached to the overlapping portions (1, and b of the levers A andB,re-

spectively. Preferably this attachment is accomplished by means ofeyebolts f, which pass completely through the overlapping ends of thelevers, as shown more clearly in Figs. 1 and 2, nuts being turned ontotheir rear ends for preventing their withdrawal. The

yoke D is preferably in the form of a semicircle, one end of which issecured in place by the bolt B, while the other end of which is securedto the plates C by bolts or rivets d, which do not pass through thelever A.

The invention is not concerned. with the character of the machine,implement, or vehicle on which it is used; but in the drawings I have bydotted lines indicated a double plowbeam G, a clevis H, having a seriesof perforations, and a pair of links I, connecting the clevis with thebolts A and B.

By comparison of Figs. 1 and 2 it will be seen that the relations of theplow-beams, the clevis, the links I, the bolts C, and the frame D remainunchanged notwithstanding changes in the relative positions of thedifferential levers A and B, these changes in the levers being permittedby a give and take in opposite sides of the chain or other connection F.

What I claim as new, and desire to secure by Letters Patent, is I 1. Adraft-equalizer having, in combination, a pair of differential leversoverlapping at their ends, plates spanning the overlapping ends of thelevers, pivots connecting the plates and levers so as to permit of theirrelative movement, a pulley, a frame or yoke supporting the pulley and achain or the like passing over the pulley and having its ends connectedto the overlapping ends of the differential levers, respectively,substantially as described.

2. In a draft-equalizer, the combination of a pair of differentiallevers having overlapping ends, plates spanning the overlapping ends ofthe levers, pivots connecting the plates and levers so as to permit oftheir relative movement, a yoke, a pulley supported by the yoke, a chainor the like extending over the pulley and having its ends secured to theoverm i lapping ends of the levers respectively, and draft linksextending rearward from the plates, substantially as described.

3. In a draft-equalizer, the combination'of WILLIAM S. EMERT.

Witnesses:

GEORGE A. YOUNG, CLARENCE J. GRAHAM/R

